Fair Value Of Assets And Liabilities (Summary Of Differences Between The Fair Value Carrying Amount Of Mortgages Held-For-Sale And Aggregate Unpaid Principal Amount) (Details) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held-for-sale	$ 22,445	$ 24,269
Fair Value Carrying Amount
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held-for-sale	22,444	24,269
Nonaccrual loans	6,689	6,775
Loans 90 days or more past due and still accruing	120	211
Aggregate Unpaid Principal
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held-for-sale	32,427	35,262
Nonaccrual loans	12,305	12,910
Loans 90 days or more past due and still accruing	158	331
Fair Value Carrying Amount Less Aggregate Unpaid Principal
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Loans held-for-sale	(9,983)	(10,993)
Nonaccrual loans	(5,616)	(6,135)
Loans 90 days or more past due and still accruing	$ (38)	$ (120)